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Checked:
01.08.2025 12:11:32

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1. IP-Addresses

Host	Type	IP-Address	is auth.	∑ Queries	∑ Timeout
felixkaiser.org	A	95.90.161.165 Dresden/Saxony/Germany (DE) - Vodafone Kabel Deutschland Hostname: ip5f5aa1a5.dynamic.kabel-deutschland.de	yes	1	0
	AAAA	2a02:810a:8d29:d700:7916:6bf0:2e27:c57e Dresden/Saxony/Germany (DE) - Vodafone Kabel Deutschland	yes
www.felixkaiser.org	A	95.90.161.165 Dresden/Saxony/Germany (DE) - Vodafone Kabel Deutschland Hostname: ip5f5aa1a5.dynamic.kabel-deutschland.de	yes	1	0
	AAAA	2a02:810a:8d29:d700:7916:6bf0:2e27:c57e Dresden/Saxony/Germany (DE) - Vodafone Kabel Deutschland	yes
*.felixkaiser.org	A	Name Error	yes
	AAAA	Name Error	yes
	CNAME	Name Error	yes

2. DNSSEC

Zone (*)	DNSSEC - Informations

Zone: (root)
(root)	1 DS RR published


	DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest 4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=


	• Status: Valid because published


	4 DNSKEY RR found


	Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 8, KeyTag 38696, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 8, KeyTag 46441, Flags 256


	Public Key with Algorithm 8, KeyTag 53148, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 21.08.2025, 00:00:00 +, Signature-Inception: 31.07.2025, 00:00:00 +, KeyTag 20326, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20326 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest "4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: org
org	1 DS RR in the parent zone found


	DS with Algorithm 8, KeyTag 26974, DigestType 2 and Digest T+3ilMU/Q4oVjEHTlInNeKhr6w2KCur/FHRcDRbh3jI=


	1 RRSIG RR to validate DS RR found


	RRSIG-Owner org., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 14.08.2025, 05:00:00 +, Signature-Inception: 01.08.2025, 04:00:00 +, KeyTag 46441, Signer-Name: (root)


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 46441 used to validate the DS RRSet in the parent zone


	3 DNSKEY RR found


	Public Key with Algorithm 8, KeyTag 8958, Flags 256


	Public Key with Algorithm 8, KeyTag 26974, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 8, KeyTag 55098, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	RRSIG-Owner org., Algorithm: 8, 1 Labels, original TTL: 3600 sec, Signature-expiration: 15.08.2025, 15:31:55 +, Signature-Inception: 25.07.2025, 14:31:55 +, KeyTag 26974, Signer-Name: org


	• Status: Good - Algorithmus 8 and DNSKEY with KeyTag 26974 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 26974, DigestType 2 and Digest "T+3ilMU/Q4oVjEHTlInNeKhr6w2KCur/FHRcDRbh3jI=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: felixkaiser.org
felixkaiser.org	0 DS RR in the parent zone found


	DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed query name "og3vf4acf4v2ksbuttgokhr59euqd52j" between the hashed NSEC3-owner "og3v7qlhil18tglquqcrfc6okalvvlij" and the hashed NextOwner "og403i1f210si1hekcg1pbbftbh9vpsj". So the parent zone confirmes the not-existence of a DS RR. Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner og3v7qlhil18tglquqcrfc6okalvvlij.org., Algorithm: 8, 2 Labels, original TTL: 3600 sec, Signature-expiration: 15.08.2025, 15:31:55 +, Signature-Inception: 25.07.2025, 14:31:55 +, KeyTag 8958, Signer-Name: org


	DS-Query in the parent zone sends valid NSEC3 RR with the Hash "gdtpongmpok61u9lvnipqor8lra9l4t0" as Owner. That's the Hash of "org" with the NextHashedOwnerName "gdtrea8kmj2rneqen4m2ogj26kfsukj7". So that domain name is the Closest Encloser of "felixkaiser.org". Opt-Out: True. Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner gdtpongmpok61u9lvnipqor8lra9l4t0.org., Algorithm: 8, 2 Labels, original TTL: 3600 sec, Signature-expiration: 22.08.2025, 10:10:45 +, Signature-Inception: 01.08.2025, 09:10:45 +, KeyTag 8958, Signer-Name: org


	0 DNSKEY RR found




Zone: www.felixkaiser.org
www.felixkaiser.org	0 DS RR in the parent zone found

3. Name Servers

Domain	Nameserver	NS-IP
www.felixkaiser.org	• ns1043.ui-dns.de / 8560_de-fra-fr7_customer-dns80		•
felixkaiser.org	• ns1043.ui-dns.de / 8560_de-fra-fr7_customer-dns80	217.160.80.43 Frankfurt am Main/Hesse/Germany (DE) - IONOS SE	•
	•	2001:8d8:fe:53:0:d9a0:502b:100 Essen/North Rhine-Westphalia/Germany (DE) - 1&1 IONOS SE	•
	• ns1054.ui-dns.com / 8560_de-fra-fr7_customer-dns82	217.160.82.54 Frankfurt am Main/Hesse/Germany (DE) - IONOS SE	•
	•	2001:8d8:fe:53:0:d9a0:5236:100 Essen/North Rhine-Westphalia/Germany (DE) - 1&1 IONOS SE	•
	• ns1092.ui-dns.biz / 8560_de-fra-fr7_customer-dns81	217.160.81.92 Frankfurt am Main/Hesse/Germany (DE) - IONOS SE	•
	•	2001:8d8:fe:53:0:d9a0:515c:100 Essen/North Rhine-Westphalia/Germany (DE) - 1&1 IONOS SE	•
	• ns1114.ui-dns.org / 8560_fr-crb-bv_customer-dns83	217.160.83.114 Frankfurt am Main/Hesse/Germany (DE) - IONOS SE	•
	•	2001:8d8:fe:53:0:d9a0:5372:100 Essen/North Rhine-Westphalia/Germany (DE) - 1&1 IONOS SE	•
org	• a0.org.afilias-nst.info / app10.nrt1.hosts.meta.redstone.afilias-nst.info-1615580861		•
	• a2.org.afilias-nst.info / FRA4		•
	• b0.org.afilias-nst.org / app23.lax1.hosts.meta.redstone.afilias-nst.info-1633102198		•
	• b2.org.afilias-nst.org / FRA4		•
	• c0.org.afilias-nst.info / app8.nrt1.hosts.meta.redstone.afilias-nst.info-1615580861		•
	• d0.org.afilias-nst.org / app21.nrt1.hosts.meta.redstone.afilias-nst.info-1615580861		•

4. SOA-Entries

Domain:	org
Zone-Name:	org
Primary:	a0.org.afilias-nst.info
Mail:	hostmaster.donuts.email
Serial:	1754042684
Refresh:	7200
Retry:	900
Expire:	1209600
TTL:	3600
num Entries:	6

Domain:	felixkaiser.org
Zone-Name:	felixkaiser.org
Primary:	ns1043.ui-dns.de
Mail:	hostmaster.1und1.com
Serial:	2017060157
Refresh:	28800
Retry:	7200
Expire:	604800
TTL:	600
num Entries:	8

Domain:	www.felixkaiser.org
Zone-Name:	felixkaiser.org
Primary:	ns1043.ui-dns.de
Mail:	hostmaster.1und1.com
Serial:	2017060157
Refresh:	28800
Retry:	7200
Expire:	604800
TTL:	600
num Entries:	1

5. Screenshots

No Screenshot listed, because no url-check with https + http status 200-299, 400-599 + not-ACME-check found.

6. Url-Checks

show header:

Domainname	Http-Status	redirect	Sec.	G
• http://felixkaiser.org/ 95.90.161.165	301	https://felixkaiser.org/ Html is minified: 109.03 %	0.067	A
Server: nginx/1.18.0
Date: Fri, 01 Aug 2025 10:12:47 GMT
Connection: keep-alive
Location: https://felixkaiser.org/
Content-Type: text/html
Content-Length: 169

• http://www.felixkaiser.org/ 95.90.161.165	301	https://www.felixkaiser.org/ Html is minified: 109.03 %	0.033	A
Server: nginx/1.18.0
Date: Fri, 01 Aug 2025 10:12:57 GMT
Connection: keep-alive
Location: https://www.felixkaiser.org/
Content-Type: text/html
Content-Length: 169

• http://felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.024	T
Timeout - The operation has timed out.

• http://www.felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.020	T
Timeout - The operation has timed out.

• https://felixkaiser.org/ 95.90.161.165	-14		10.016	T
Timeout - The operation has timed out.

• https://felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.026	T
Timeout - The operation has timed out.

• https://www.felixkaiser.org/ 95.90.161.165	-14		10.023	T
Timeout - The operation has timed out.

• https://www.felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.030	T
Timeout - The operation has timed out.

• http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165 Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0	301	https://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de Html is minified: 109.03 % Other inline scripts (∑/total): 0/0	0.044	A
Visible Content:
Server: nginx/1.18.0
Date: Fri, 01 Aug 2025 10:13:47 GMT
Connection: keep-alive
Location: https://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Content-Type: text/html
Content-Length: 169

• http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165 Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0	301	https://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de Html is minified: 109.03 % Other inline scripts (∑/total): 0/0	0.030	A
Visible Content:
Server: nginx/1.18.0
Date: Fri, 01 Aug 2025 10:13:57 GMT
Connection: keep-alive
Location: https://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Content-Type: text/html
Content-Length: 169

• http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.023	T
Timeout - The operation has timed out.
Visible Content:

• http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.026	T
Timeout - The operation has timed out.
Visible Content:

• https://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de	-14		10.023	T
Timeout - The operation has timed out.
Visible Content:

• https://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de	-14		10.023	T
Timeout - The operation has timed out.
Visible Content:

• https://95.90.161.165/ 95.90.161.165	-14		10.026	T
Timeout - The operation has timed out.

• https://[2a02:810a:8d29:d700:7916:6bf0:2e27:c57e]/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		10.026	T
Timeout - The operation has timed out.

7. Comments

	1. General Results, most used to calculate the result
A	name "felixkaiser.org" is domain, public suffix is ".org", top-level-domain is ".org", top-level-domain-type is "generic", tld-manager is "Public Interest Registry (PIR)", num .org-domains preloaded: 10167 (complete: 271405)
A	Good: All ip addresses are public addresses
A	Good: Minimal 2 ip addresses per domain name found: felixkaiser.org has 2 different ip addresses (authoritative).
A	Good: Minimal 2 ip addresses per domain name found: www.felixkaiser.org has 2 different ip addresses (authoritative).
A	Good: Ipv4 and Ipv6 addresses per domain name found: felixkaiser.org has 1 ipv4, 1 ipv6 addresses
A	Good: Ipv4 and Ipv6 addresses per domain name found: www.felixkaiser.org has 1 ipv4, 1 ipv6 addresses
A	Good: No asked Authoritative Name Server had a timeout
A	Good: No cookie sent via http.
	HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
C	Error - no version with Http-Status 200
H	Fatal error: No https - result with http-status 200, no encryption
K	http://felixkaiser.org/ 95.90.161.165, Status 301		http://felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14	Configuration problem - different ip addresses with different status
K	http://www.felixkaiser.org/ 95.90.161.165, Status 301		http://www.felixkaiser.org/ 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14	Configuration problem - different ip addresses with different status
K	http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165, Status 301		http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14	Configuration problem - different ip addresses with different status
K	http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165, Status 301		http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14	Configuration problem - different ip addresses with different status
A	Good: More then one ip address per domain name found, checking all ip addresses the same http status and the same certificate found: Domain felixkaiser.org, 2 ip addresses.
A	Good: More then one ip address per domain name found, checking all ip addresses the same http status and the same certificate found: Domain www.felixkaiser.org, 2 ip addresses.
	Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain felixkaiser.org, 2 ip addresses.
	Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain www.felixkaiser.org, 2 ip addresses.
B	No _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.felixkaiser.org
	2. Header-Checks
U				No https result with http status 2 or 4 (standard-check) found, no header checked.
	3. DNS- and NameServer - Checks
A	Info:: 52 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 4 Name Servers.
A	Info:: 52 Queries complete, 52 with IPv6, 0 with IPv4.
A	Good: All DNS Queries done via IPv6.
	Bad (greater 8):: An average of 13.0 queries per domain name server required to find all ip addresses of all name servers.
A	Info:: 4 different Name Servers found: ns1043.ui-dns.de, ns1054.ui-dns.com, ns1092.ui-dns.biz, ns1114.ui-dns.org, 4 Name Servers included in Delegation: ns1043.ui-dns.de, ns1054.ui-dns.com, ns1092.ui-dns.biz, ns1114.ui-dns.org, 4 Name Servers included in 1 Zone definitions: ns1043.ui-dns.de, ns1054.ui-dns.com, ns1092.ui-dns.biz, ns1114.ui-dns.org, 1 Name Servers listed in SOA.Primary: ns1043.ui-dns.de.
A	Good: Only one SOA.Primary Name Server found.: ns1043.ui-dns.de.
A	Good: SOA.Primary Name Server included in the delegation set.: ns1043.ui-dns.de.
A	Good: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: ns1043.ui-dns.de, ns1054.ui-dns.com, ns1092.ui-dns.biz, ns1114.ui-dns.org
A	Good: All Name Server Domain Names have a Public Suffix.
A	Good: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
A	Good: All Name Server ip addresses are public.
A	Good: Minimal 2 different name servers (public suffix and public ip address) found: 4 different Name Servers found
A	Good: All name servers have ipv4- and ipv6-addresses.: 4 different Name Servers found
A	Good: Name servers with different Top Level Domains / Public Suffix List entries found: 4 Name Servers, 4 Top Level Domains: de, org, com, biz
A	Good: Name Servers with different domain names found.: 4 different Domains found
	Warning: All Name Servers from the same Country / IP location.: 4 Name Servers, 1 Countries: DE
A	Info: Ipv4-Subnet-list: 4 Name Servers, 1 different subnets (first Byte): 217., 1 different subnets (first two Bytes): 217.160., 4 different subnets (first three Bytes): 217.160.80., 217.160.81., 217.160.82., 217.160.83.
A	Good: Name Server IPv4-addresses from different subnet found:
A	Info: IPv6-Subnet-list: 4 Name Servers with IPv6, 1 different subnets (first block): 2001:, 1 different subnets (first two blocks): 2001:08d8:, 1 different subnets (first three blocks): 2001:08d8:00fe:, 1 different subnets (first four blocks): 2001:08d8:00fe:0053:
	Fatal: All Name Server IPv6 addresses from the same subnet.
A	Good: Nameserver supports TCP connections: 8 good Nameserver
A	Good: Nameserver supports Echo Capitalization: 8 good Nameserver
A	Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 8 good Nameserver
A	Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 8 good Nameserver
A	Good: All SOA have the same Serial Number
	Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.
	4. Content- and Performance-critical Checks
	http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
	http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e	-14		Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
	https://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de	-14		Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
	https://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de	-14		Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
	http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14		http://felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165, Status 301	Fatal: Check of /.well-known/acme-challenge/random-filename has different answers checking ipv6 / ipv4. Ipv6 doesn't have the expected result http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 validation may not work. Checking the validation file in /.well-known/acme-challenge Letsencrypt prefers ipv6. Two options: Remove your ipv6 / AAAA DNS entry or (better) fix your ipv6, so your webserver handles ipv6 correct. Perhaps add "Listen [::]:80". Don't use <VirtualHost ip-address:80>, switch to <VirtualHost *:80>. If you use IIS, check your bindings. Don't select a single ip address. Use this tool to check your raw ipv6 address. Add your domain name in the "Hostname" - field. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
	http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 2a02:810a:8d29:d700:7916:6bf0:2e27:c57e, Status -14		http://www.felixkaiser.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 95.90.161.165, Status 301	Fatal: Check of /.well-known/acme-challenge/random-filename has different answers checking ipv6 / ipv4. Ipv6 doesn't have the expected result http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 validation may not work. Checking the validation file in /.well-known/acme-challenge Letsencrypt prefers ipv6. Two options: Remove your ipv6 / AAAA DNS entry or (better) fix your ipv6, so your webserver handles ipv6 correct. Perhaps add "Listen [::]:80". Don't use <VirtualHost ip-address:80>, switch to <VirtualHost *:80>. If you use IIS, check your bindings. Don't select a single ip address. Use this tool to check your raw ipv6 address. Add your domain name in the "Hostname" - field. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
A	Info: No img element found, no alt attribute checked
A	Good: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
A	Duration: 241497 milliseconds, 241.497 seconds

8. Connections

No connection informations found. Perhaps only http - connections.

9. Certificates

No certificate informations found. Perhaps only http - connections.

10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

Issuer				last 7 days	active	num Certs
CN=E5, O=Let's Encrypt, C=US				0	0	9
CN=E6, O=Let's Encrypt, C=US				0	0	5

CertSpotter-Id	Issuer	not before	not after	Domain names	LE-Duplicate	next LE
11335159721 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 08:47:49	2025-10-30 08:47:48	felixkaiser.org, www.felixkaiser.org - 2 entries
11335142806 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 08:46:02	2025-10-30 08:46:01	felixkaiser.org, www.felixkaiser.org - 2 entries
11335040622 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 08:33:47	2025-10-30 08:33:46	felixkaiser.org - 1 entries
11334955815 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 08:23:16	2025-10-30 08:23:15	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de - 4 entries
11334275585 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 07:00:33	2025-10-30 07:00:32	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de - 4 entries
11334256876 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 06:57:29	2025-10-30 06:57:28	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de - 4 entries
11334203923 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 06:49:53	2025-10-30 06:49:52	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de - 4 entries
11326995975 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-31 15:06:08	2025-10-29 15:06:07	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de - 4 entries
11326550520 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-31 14:19:05	2025-10-29 14:19:04	felixkaiser.org - 1 entries
11311678715 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-30 09:12:40	2025-10-28 09:12:39	felixkaiser.org, notahacker.de - 2 entries
11189665984 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-07-20 08:15:42	2025-10-18 08:15:41	felixkaiser.org - 1 entries
11179636112 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-19 10:05:42	2025-10-17 10:05:41	felixkaiser.org - 1 entries
11172892855 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-18 19:58:52	2025-10-16 19:58:51	felixkaiser.org, notahacker.de, www.notahacker.de - 3 entries
11172862109 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-18 19:54:39	2025-10-16 19:54:38	www.felixkaiser.org - 1 entries

2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > of the last months are listed

Issuer				last 7 days	active	num Certs
CN=E5, O=Let's Encrypt, C=US				0	0	9
CN=E6, O=Let's Encrypt, C=US				0	0	5

CRT-Id	Issuer	not before	not after	Domain names	LE-Duplicate	next LE
20047940355 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 06:47:49	2025-10-30 07:47:48	felixkaiser.org, www.felixkaiser.org 2 entries
20047912609 precert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 06:46:02	2025-10-30 07:46:01	felixkaiser.org, www.felixkaiser.org 2 entries
20047734657 precert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 06:33:47	2025-10-30 07:33:46	felixkaiser.org 1 entries
20047571851 precert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 06:23:16	2025-10-30 07:23:15	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de 4 entries
20046360411 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-08-01 05:00:33	2025-10-30 06:00:32	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de 4 entries
20046315564 precert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 04:57:29	2025-10-30 05:57:28	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de 4 entries
20046230011 precert	CN=E6, O=Let's Encrypt, C=US	2025-08-01 04:49:53	2025-10-30 05:49:52	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de 4 entries
20033346292 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-31 13:06:08	2025-10-29 14:06:07	felixkaiser.org, notahacker.de, www.felixkaiser.org, www.notahacker.de 4 entries
20032542242 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-31 12:19:05	2025-10-29 13:19:04	felixkaiser.org 1 entries
20006195467 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-30 07:12:40	2025-10-28 08:12:39	felixkaiser.org, notahacker.de 2 entries
19792127414 leaf cert	CN=E6, O=Let's Encrypt, C=US	2025-07-20 06:15:42	2025-10-18 06:15:41	felixkaiser.org 1 entries
19774348088 leaf cert	CN=E5, O=Let's Encrypt, C=US	2025-07-19 08:05:42	2025-10-17 08:05:41	felixkaiser.org 1 entries
19762418972 precert	CN=E5, O=Let's Encrypt, C=US	2025-07-18 17:58:52	2025-10-16 17:58:51	felixkaiser.org, notahacker.de, www.notahacker.de 3 entries
19762377208 precert	CN=E5, O=Let's Encrypt, C=US	2025-07-18 17:54:39	2025-10-16 17:54:38	www.felixkaiser.org 1 entries

11. Html-Content - Entries

No Html-Content entries found. Only checked if https + status 200/401/403/404

12. Html-Parsing via https://validator.w3.org/nu/

No https result http status 200 and Content-Type text/html or text/xml found, no Html-Parsing - Check

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: ns1043.ui-dns.de, ns1054.ui-dns.com, ns1092.ui-dns.biz, ns1114.ui-dns.org

QNr.	Domain	Type	NS used
1	de	NS	a.root-servers.net (2001:503:ba3e::2:30)
	Answer: a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de
2	ns1043.ui-dns.de	NS	a.nic.de (2001:678:2::53)
	Answer: ns-de.ui-dns.biz, ns-de.ui-dns.com, ns-de.ui-dns.de, ns-de.ui-dns.org
	Answer: ns-de.ui-dns.de 185.132.32.193, 2001:8d8:fe:53:0:d9a0:50c1:100, 217.160.80.193, 2607:f1c0:fe:53:185:132:32:193
3	com	NS	b.root-servers.net (2001:500:200::b)
	Answer: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
4	ns1054.ui-dns.com	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: ns-com.ui-dns.biz, ns-com.ui-dns.com, ns-com.ui-dns.de, ns-com.ui-dns.org
	Answer: ns-com.ui-dns.com 185.132.34.214, 2001:8d8:fe:53:0:d9a0:52d6:100, 217.160.82.214, 2607:f1c0:fe:53:185:132:34:214
5	biz	NS	e.root-servers.net (2001:500:a8::e)
	Answer: a.gtld.biz, b.gtld.biz, c.gtld.biz, m.gtld.biz, n.gtld.biz, w.gtld.biz, x.gtld.biz, y.gtld.biz
6	ns1092.ui-dns.biz	NS	a.gtld.biz (2001:502:ad09::30)
	Answer: ns-biz.ui-dns.biz, ns-biz.ui-dns.com, ns-biz.ui-dns.de, ns-biz.ui-dns.org
	Answer: ns-biz.ui-dns.biz 185.132.33.195, 2001:8d8:fe:53:0:d9a0:51c3:100, 217.160.81.195, 2607:f1c0:fe:53:185:132:33:195
7	org	NS	h.root-servers.net (2001:500:1::53)
	Answer: a0.org.afilias-nst.info, a2.org.afilias-nst.info, b0.org.afilias-nst.org, b2.org.afilias-nst.org, c0.org.afilias-nst.info, d0.org.afilias-nst.org
8	ns1114.ui-dns.org	NS	a0.org.afilias-nst.info (2001:500:e::1)
	Answer: ns-org.ui-dns.biz, ns-org.ui-dns.com, ns-org.ui-dns.de, ns-org.ui-dns.org
	Answer: ns-org.ui-dns.org 185.132.34.194, 2001:8d8:fe:53:0:d9a0:52c2:100, 217.160.82.194, 2607:f1c0:fe:53:185:132:34:194
9	ns-de.ui-dns.biz	NS	a.gtld.biz (2001:502:ad09::30)
	Answer: ns-biz.ui-dns.biz, ns-biz.ui-dns.com, ns-biz.ui-dns.de, ns-biz.ui-dns.org
	Answer: ns-biz.ui-dns.biz 185.132.33.195, 2001:8d8:fe:53:0:d9a0:51c3:100, 217.160.81.195, 2607:f1c0:fe:53:185:132:33:195
10	ns-de.ui-dns.com	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: ns-com.ui-dns.biz, ns-com.ui-dns.com, ns-com.ui-dns.de, ns-com.ui-dns.org
	Answer: ns-com.ui-dns.com 185.132.34.214, 2001:8d8:fe:53:0:d9a0:52d6:100, 217.160.82.214, 2607:f1c0:fe:53:185:132:34:214
11	ns-de.ui-dns.org	NS	a0.org.afilias-nst.info (2001:500:e::1)
	Answer: ns-org.ui-dns.biz, ns-org.ui-dns.com, ns-org.ui-dns.de, ns-org.ui-dns.org
	Answer: ns-org.ui-dns.org 185.132.34.194, 2001:8d8:fe:53:0:d9a0:52c2:100, 217.160.82.194, 2607:f1c0:fe:53:185:132:34:194
12	ns-com.ui-dns.biz	NS	a.gtld.biz (2001:502:ad09::30)
	Answer: ns-biz.ui-dns.biz, ns-biz.ui-dns.com, ns-biz.ui-dns.de, ns-biz.ui-dns.org
	Answer: ns-biz.ui-dns.biz 185.132.33.195, 2001:8d8:fe:53:0:d9a0:51c3:100, 217.160.81.195, 2607:f1c0:fe:53:185:132:33:195
13	ns-com.ui-dns.de	NS	a.nic.de (2001:678:2::53)
	Answer: ns-de.ui-dns.biz, ns-de.ui-dns.com, ns-de.ui-dns.de, ns-de.ui-dns.org
	Answer: ns-de.ui-dns.de 185.132.32.193, 2001:8d8:fe:53:0:d9a0:50c1:100, 217.160.80.193, 2607:f1c0:fe:53:185:132:32:193
14	ns-com.ui-dns.org	NS	a0.org.afilias-nst.info (2001:500:e::1)
	Answer: ns-org.ui-dns.biz, ns-org.ui-dns.com, ns-org.ui-dns.de, ns-org.ui-dns.org
	Answer: ns-org.ui-dns.org 185.132.34.194, 2001:8d8:fe:53:0:d9a0:52c2:100, 217.160.82.194, 2607:f1c0:fe:53:185:132:34:194
15	ns-biz.ui-dns.com	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: ns-com.ui-dns.biz, ns-com.ui-dns.com, ns-com.ui-dns.de, ns-com.ui-dns.org
	Answer: ns-com.ui-dns.com 185.132.34.214, 2001:8d8:fe:53:0:d9a0:52d6:100, 217.160.82.214, 2607:f1c0:fe:53:185:132:34:214
16	ns-biz.ui-dns.de	NS	a.nic.de (2001:678:2::53)
	Answer: ns-de.ui-dns.biz, ns-de.ui-dns.com, ns-de.ui-dns.de, ns-de.ui-dns.org
	Answer: ns-de.ui-dns.de 185.132.32.193, 2001:8d8:fe:53:0:d9a0:50c1:100, 217.160.80.193, 2607:f1c0:fe:53:185:132:32:193
17	ns-biz.ui-dns.org	NS	a0.org.afilias-nst.info (2001:500:e::1)
	Answer: ns-org.ui-dns.biz, ns-org.ui-dns.com, ns-org.ui-dns.de, ns-org.ui-dns.org
	Answer: ns-org.ui-dns.org 185.132.34.194, 2001:8d8:fe:53:0:d9a0:52c2:100, 217.160.82.194, 2607:f1c0:fe:53:185:132:34:194
18	ns-org.ui-dns.biz	NS	a.gtld.biz (2001:502:ad09::30)
	Answer: ns-biz.ui-dns.biz, ns-biz.ui-dns.com, ns-biz.ui-dns.de, ns-biz.ui-dns.org
	Answer: ns-biz.ui-dns.biz 185.132.33.195, 2001:8d8:fe:53:0:d9a0:51c3:100, 217.160.81.195, 2607:f1c0:fe:53:185:132:33:195
19	ns-org.ui-dns.com	NS	a.gtld-servers.net (2001:503:a83e::2:30)
	Answer: ns-com.ui-dns.biz, ns-com.ui-dns.com, ns-com.ui-dns.de, ns-com.ui-dns.org
	Answer: ns-com.ui-dns.com 185.132.34.214, 2001:8d8:fe:53:0:d9a0:52d6:100, 217.160.82.214, 2607:f1c0:fe:53:185:132:34:214
20	ns-org.ui-dns.de	NS	a.nic.de (2001:678:2::53)
	Answer: ns-de.ui-dns.biz, ns-de.ui-dns.com, ns-de.ui-dns.de, ns-de.ui-dns.org
	Answer: ns-de.ui-dns.de 185.132.32.193, 2001:8d8:fe:53:0:d9a0:50c1:100, 217.160.80.193, 2607:f1c0:fe:53:185:132:32:193
21	ns-de.ui-dns.biz: 185.132.33.193, 217.160.81.193	A	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
22	ns-de.ui-dns.biz: 2001:8d8:fe:53:0:d9a0:51c1:100, 2607:f1c0:fe:53:185:132:33:193	AAAA	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
23	ns-de.ui-dns.com: 185.132.34.193, 217.160.82.193	A	ns-com.ui-dns.com (2001:8d8:fe:53:0:d9a0:52d6:100)
24	ns-de.ui-dns.com: 2001:8d8:fe:53:0:d9a0:52c1:100, 2607:f1c0:fe:53:185:132:34:193	AAAA	ns-com.ui-dns.com (2001:8d8:fe:53:0:d9a0:52d6:100)
25	ns-de.ui-dns.org: 185.132.35.193, 217.160.83.193	A	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
26	ns-de.ui-dns.org: 2001:8d8:fe:53:0:d9a0:53c1:100, 2607:f1c0:fe:53:185:132:35:193	AAAA	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
27	ns-com.ui-dns.biz: 185.132.33.194, 217.160.81.194	A	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
28	ns-com.ui-dns.biz: 2001:8d8:fe:53:0:d9a0:51c2:100, 2607:f1c0:fe:53:185:132:33:194	AAAA	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
29	ns-com.ui-dns.de: 185.132.32.194, 217.160.80.194	A	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
30	ns-com.ui-dns.de: 2001:8d8:fe:53:0:d9a0:50c2:100, 2607:f1c0:fe:53:185:132:32:194	AAAA	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
31	ns-com.ui-dns.org: 185.132.35.194, 217.160.83.194	A	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
32	ns-com.ui-dns.org: 2001:8d8:fe:53:0:d9a0:53c2:100, 2607:f1c0:fe:53:185:132:35:194	AAAA	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
33	ns-biz.ui-dns.com: 185.132.34.195, 217.160.82.195	A	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
34	ns-biz.ui-dns.com: 2001:8d8:fe:53:0:d9a0:52c3:100, 2607:f1c0:fe:53:185:132:34:195	AAAA	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
35	ns-biz.ui-dns.de: 185.132.32.195, 217.160.80.195	A	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
36	ns-biz.ui-dns.de: 2001:8d8:fe:53:0:d9a0:50c3:100, 2607:f1c0:fe:53:185:132:32:195	AAAA	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
37	ns-biz.ui-dns.org: 185.132.35.195, 217.160.83.195	A	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
38	ns-biz.ui-dns.org: 2001:8d8:fe:53:0:d9a0:53c3:100, 2607:f1c0:fe:53:185:132:35:195	AAAA	ns-org.ui-dns.org (2001:8d8:fe:53:0:d9a0:52c2:100)
39	ns-org.ui-dns.biz: 185.132.33.196, 217.160.81.196	A	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
40	ns-org.ui-dns.biz: 2001:8d8:fe:53:0:d9a0:51c4:100, 2607:f1c0:fe:53:185:132:33:196	AAAA	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
41	ns-org.ui-dns.com: 185.132.34.196, 217.160.82.196	A	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
42	ns-org.ui-dns.com: 2001:8d8:fe:53:0:d9a0:52c4:100, 2607:f1c0:fe:53:185:132:34:196	AAAA	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
43	ns-org.ui-dns.de: 185.132.32.196, 217.160.80.196	A	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
44	ns-org.ui-dns.de: 2001:8d8:fe:53:0:d9a0:50c4:100, 2607:f1c0:fe:53:185:132:32:196	AAAA	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
45	ns1043.ui-dns.de: 217.160.80.43	A	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
46	ns1043.ui-dns.de: 2001:8d8:fe:53:0:d9a0:502b:100	AAAA	ns-de.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c1:100)
47	ns1054.ui-dns.com: 217.160.82.54	A	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
48	ns1054.ui-dns.com: 2001:8d8:fe:53:0:d9a0:5236:100	AAAA	ns-com.ui-dns.biz (2607:f1c0:fe:53:185:132:33:194)
49	ns1092.ui-dns.biz: 217.160.81.92	A	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
50	ns1092.ui-dns.biz: 2001:8d8:fe:53:0:d9a0:515c:100	AAAA	ns-biz.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c3:100)
51	ns1114.ui-dns.org: 217.160.83.114	A	ns-org.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c4:100)
52	ns1114.ui-dns.org: 2001:8d8:fe:53:0:d9a0:5372:100	AAAA	ns-org.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51c4:100)

14. CAA - Entries

Domainname	Value	∑ Queries
www.felixkaiser.org	no CAA entry found	1
felixkaiser.org	no CAA entry found	1
org	no CAA entry found	1

15. TXT - Entries

Domainname	TXT Entry	Status	∑ Queries
felixkaiser.org	v=spf1 include:_spf-eu.ionos.com ~all	ok	1
www.felixkaiser.org	v=spf1 include:_spf-eu.ionos.com ~all	ok	1
_acme-challenge.felixkaiser.org		Name Error - The domain name does not exist	1
_acme-challenge.www.felixkaiser.org		Name Error - The domain name does not exist	1
_acme-challenge.felixkaiser.org.felixkaiser.org		Name Error - The domain name does not exist	1
_acme-challenge.www.felixkaiser.org.felixkaiser.org		Name Error - The domain name does not exist	1
_acme-challenge.www.felixkaiser.org.www.felixkaiser.org		Name Error - The domain name does not exist	1

16. DomainService - Entries

Type		Domain	Pref	Value	DNS-error	num Answers	Status
MX		felixkaiser.org	10	mx01.ionos.de	0	2	ok
	A			217.72.192.67	0	1	ok
	CNAME				0	0	ok
MX		felixkaiser.org	10	mx00.ionos.de	0	2	ok
	A			212.227.15.41	0	1	ok
	CNAME				0	0	ok
MX		www.felixkaiser.org	10	mx00.ionos.de	0	2	ok
	A			212.227.15.41	0	1	ok
	CNAME				0	0	ok
MX		www.felixkaiser.org	10	mx01.ionos.de	0	2	ok
	A			217.72.192.67	0	1	ok
	CNAME				0	0	ok
SPF	TXT	felixkaiser.org		v=spf1 include:_spf-eu.ionos.com ~all			ok
	TXT	_spf-eu.ionos.com		v=spf1 ip4:212.227.126.128/25 ip4:82.165.159.0/26 ip4:212.227.15.0/25 ip4:212.227.17.0/27 ip4:217.72.192.64/26 ip4:185.48.116.13/32 ?all			ok

17. Cipher Suites

No results

18. Portchecks

No open Ports <> 80 / 443 found, so no additional Ports checked.

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